I'm really looking forward to Winterhold. This would be a great opportunity to greatly expand scribing.
Yeah, Winterhold could be fun. Expanding Scribing seems fitting for a Winterhold Chapter, but I also think that it would be a good place to introduce a new guild skill line with classic TES spells (Conjure Flame Atronach for example) or perhaps even a new magical weapon (such as an Alteration Staff or One Handed & Spell).